Clan x86
General Forums => Academic / School => Topic started by: Towelie on May 04, 2006, 10:25:20 pm
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I am taking it tommorow.... I have not studied enough yet. Hopefully I pass :-/. On the practice multiple choice tests, I got a 20% on the first (I left WAY too many blank) and a 40% on the 2nd one. But the 40% one came out to around 20 points.... and you need 75 to pass (with essays in it). Hopefully I do about 35points on the multiple choice, and get 3s and 4s on the essays.
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Isn't it better to leave an answer blank if you don't know which choice is correct? Wrong answers get 1/4 of a point subtracted, I think. Whereas, blank answers don't do anything to your score.
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so basically, if I can eliminate one I go for it :P. I figure, 1/5 chance to get it right if you guess completely and -1/4th of a point, but if you can eliminate 1, it evens the odds
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Using probability theory Blaise Pascal developed hundereds of years ago:
Perform some action Iff ( Gain > Loss ), or if you're more daring: ( Gain >= Loss ).
In this case, the possible gain is "1." The possible loss is "1/4." The chance to get the question right is "1/4." The chance to get the question wrong is "3/4."
(1)(1/4) = 1/4
(1/4)(3/4) = 3/16
(1/4) > (3/16); go for it.
Similarly:
(1)(1/5) = 1/5
(1/4)(4/5) = 1/5
(1/5) = (1/5)
It really doesn't help much if you can only eliminate one answer. I'd still guess, but only if I could use intuition instead of relying on some arbitrary event to choose for me.
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Well, technically, won't it only reach that expected value if you answered many questions with eliminating only one question?
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Well, technically, won't it only reach that expected value if you answered many questions with eliminating only one question?
No. This is a simple analysis of one question.
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Using probability theory Blaise Pascal developed hundereds of years ago:
Perform some action Iff ( Gain > Loss ), or if you're more daring: ( Gain >= Loss ).
In this case, the possible gain is "1." The possible loss is "1/4." The chance to get the question right is "1/4." The chance to get the question wrong is "3/4."
(1)(1/4) = 1/4
(1/4)(3/4) = 3/16
(1/4) > (3/16); go for it.
Similarly:
(1)(1/5) = 1/5
(1/4)(4/5) = 1/5
(1/5) = (1/5)
It really doesn't help much if you can only eliminate one answer. I'd still guess, but only if I could use intuition instead of relying on some arbitrary event to choose for me.
I do not mean guess by eliminating one, and ramdomly choose. I go by whatever one I think fits it the best... duh! :) Oh, and there are 5 answeres per question... so eliminating one gives you a 1/4 chance to get it correct, and only 1/4th point penalty if wrong. If you cant eliminate its a 1/5 trying to guess, and a 1/4th penalty for the loss.... which I wouldnt do anything for. But obviously, I will try to get it down to 2 if I can :D
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Oh, and there are 5 answeres per question... so eliminating one gives you a 1/4 chance to get it correct, and only 1/4th point penalty if wrong. If you cant eliminate its a 1/5 trying to guess, and a 1/4th penalty for the loss.... which I wouldnt do anything for. But obviously, I will try to get it down to 2 if I can :D
... I clearly demonstrate my consciousness of this fact by my useage of pascal probability theory.
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Well, that test sucked. I mean, it REALLY sucked. I got there at 11am, it started at 12, got out at 4:20, and then I went straight to my swim meet.... which I just got backat 7:30 from.
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Swimming and big tests don't always mix :(
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Well, that test sucked. I mean, it REALLY sucked. I got there at 11am, it started at 12, got out at 4:20, and then I went straight to my swim meet.... which I just got backat 7:30 from.
Damn, that sucks. My AP tests all started at 8 and ended around 12, that way I could go to lunch then be at work by like 4. That really takes your whole day man, that blows.
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Well, that test sucked. I mean, it REALLY sucked. I got there at 11am, it started at 12, got out at 4:20, and then I went straight to my swim meet.... which I just got backat 7:30 from.
Damn, that sucks. My AP tests all started at 8 and ended around 12, that way I could go to lunch then be at work by like 4. That really takes your whole day man, that blows.
I got at my test about 11:30, it ended about 4:30. :P
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I got at my test about 11:30, it ended about 4:30. :P
Exact same time for me also.
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Well, that test sucked. I mean, it REALLY sucked. I got there at 11am, it started at 12, got out at 4:20, and then I went straight to my swim meet.... which I just got backat 7:30 from.
Damn, that sucks. My AP tests all started at 8 and ended around 12, that way I could go to lunch then be at work by like 4. That really takes your whole day man, that blows.
I was so fucking hungry during that test, I ate at 9am.... couldnt eat before I left :P. So, when I got out I went to my car, got my swim bag, and ate my sandwitch while walking to the pool. You have no idea how good that was :)